Chapter
Problem and | Possible Solution | Service | Operator |
Symptom to |
| Manual | Manual |
Check |
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|
|
Video has shadow | Correct using MENU POSITION and |
|
|
on left or right | PINCUSHION POSITION. |
|
|
edge. |
|
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Video image not | Correct using PINCUSHION |
|
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squared. | POSITION and KEYSTONE. |
|
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Video image bowed | Correct using PINCUSHION left/right |
|
|
at left/right edge | arrow. |
|
|
or top/bottom. |
|
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|
Picture horizontal | Correct using LINEARITY and EDGE |
|
|
linearity. | LINEARITY. |
|
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|
XY Convergence |
|
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|
Linearity different | Yoke not properly set on CRT. | 3.2 |
|
between colors, |
|
|
|
cannot converge. |
|
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|
Horizontal size | Adjust horizontal sizing coil on | 3.5 |
|
different | yoke. |
|
|
between colors. |
|
|
|
Vertical size | Set vertical size and linearity | 3.3, 3.4 |
|
different | adjustment on Vertical |
|
|
between colors. | Deflection Board. |
|
|
Not enough range in | Adjust Red or Blue POSITION to |
| 4.8.9 |
Red/Blue XY | compensate. |
|
|
convergence. |
|
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|
Picture color |
|
|
|
balance |
|
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|
Missing either Red, | ILA® assembly bias voltage bad or | 4.11 |
|
Green, or Blue | no |
|
|
video. | Processor Board. |
|
|
Red, Green, or Blue | Replace ILA® assembly or Video | 4.12, 4.8 |
|
lacks color. | Amplifier Board. |
|
|
Internal gray scale | Readjust CONTRAST adjustments. |
|
|
correct but |
|
|
|
incorrect video |
|
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|
color. |
|
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|
Dim area on screen | Adjust collimating lens. | 4.4 |
|
when viewing |
|
|
|
flat field. |
|
|
|
Black video image | Adjust THRESHOLD, G2 and | 3.10 | 4.6, 4.10 |
overdriven. | BRIGHTNESS. |
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|
Model 330, 340SC, and 370SC Service Manual |
